Modified Mastering Physics With Pearson Etext -- Standalone Access Card -- For Physics For Scientists & Engineers With Modern Physics (5th Edition)
5th Edition
ISBN: 9780134402628
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 18, Problem 1P
To determine
The RMS speed of helium atoms near the surface of Sun.
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(I) Calculate the rms speed of helium atoms near thesurface of the Sun at a temperature of about 6000 K.
(II) Show that the rms speed of molecules in a gas is given
by vrms = V3P/p, where P is the pressure in the gas and
pis the gas density.
(a) What is the average kinetic energy in joules of hydrogen atoms on the 5500ºC surface of the Sun? (b) What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 6.00×105 K ?
Chapter 18 Solutions
Modified Mastering Physics With Pearson Etext -- Standalone Access Card -- For Physics For Scientists & Engineers With Modern Physics (5th Edition)
Ch. 18.1 - Prob. 1AECh. 18.1 - Prob. 1BECh. 18.1 - Prob. 1CECh. 18.1 - Prob. 1DECh. 18.4 - Prob. 1EECh. 18 - Why doesnt the size of different molecules enter...Ch. 18 - When a gas is rapidly compressed (say, by pushing...Ch. 18 - In Section 181 we assumed the gas molecules made...Ch. 18 - Explain in words how Charless law follows from...Ch. 18 - Prob. 5Q
Ch. 18 - As you go higher in the Earths atmosphere, the...Ch. 18 - Prob. 7QCh. 18 - Explain why the peak of the curve for 310 K in...Ch. 18 - Is temperature a macroscopic or microscopic...Ch. 18 - Escape velocity for the Earth refers to the...Ch. 18 - Prob. 11QCh. 18 - If the pressure in a gas is doubled while its...Ch. 18 - What everyday observation would tell you that not...Ch. 18 - Alcohol evaporates more quickly than water at room...Ch. 18 - Explain why a hot humid day is far more...Ch. 18 - Is it possible to boil water at room temperature...Ch. 18 - What exactly does it mean when we say that oxygen...Ch. 18 - A length of thin wire is placed over a block of...Ch. 18 - Consider two days when the air temperature is the...Ch. 18 - (a) Why does food cook faster in a pressure...Ch. 18 - How do a gas and a vapor differ?Ch. 18 - (a) At suitable temperatures and pressures, can...Ch. 18 - Why does dry ice not last long at room...Ch. 18 - Under what conditions can liquid CO2 exist? Be...Ch. 18 - Why does exhaled air appear as a little white...Ch. 18 - Prob. 26QCh. 18 - Prob. 27QCh. 18 - Prob. 1MCQCh. 18 - Prob. 2MCQCh. 18 - Prob. 3MCQCh. 18 - Prob. 4MCQCh. 18 - Prob. 5MCQCh. 18 - Prob. 6MCQCh. 18 - Prob. 7MCQCh. 18 - Prob. 8MCQCh. 18 - Prob. 9MCQCh. 18 - Prob. 10MCQCh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Prob. 5PCh. 18 - Prob. 6PCh. 18 - (I) A 1.0-mol sample of hydrogen gas has a...Ch. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - Prob. 10PCh. 18 - Prob. 11PCh. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - Prob. 14PCh. 18 - Prob. 15PCh. 18 - Prob. 16PCh. 18 - Prob. 17PCh. 18 - Prob. 18PCh. 18 - Prob. 19PCh. 18 - (I) A group of 25 particles have the following...Ch. 18 - Prob. 21PCh. 18 - Prob. 22PCh. 18 - Prob. 24PCh. 18 - (I) (a) At atmospheric pressure, in what phases...Ch. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - (II) A pressure cooker is a sealed pot designed to...Ch. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - Prob. 38PCh. 18 - Prob. 39PCh. 18 - Prob. 40PCh. 18 - Prob. 41PCh. 18 - Prob. 42PCh. 18 - Prob. 43PCh. 18 - Prob. 44PCh. 18 - Prob. 45PCh. 18 - Prob. 46PCh. 18 - Prob. 47PCh. 18 - Prob. 49PCh. 18 - Prob. 53PCh. 18 - A sample of ideal gas must contain at least N =...Ch. 18 - In outer space the density of matter is about one...Ch. 18 - Calculate approximately the total translational...Ch. 18 - (a) Estimate the rms speed of an amino acid, whose...Ch. 18 - The escape speed from the Earth is 1.12 104 m/s,...Ch. 18 - Prob. 63GPCh. 18 - Prob. 66GPCh. 18 - Prob. 69GPCh. 18 - Prob. 71GPCh. 18 - Prob. 72GPCh. 18 - Prob. 73GPCh. 18 - Prob. 74GPCh. 18 - Prob. 75GPCh. 18 - Prob. 76GPCh. 18 - Prob. 77GP
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- Gas molecules of mass m are confined in a cylinder of radius R and height L (with R >> L) kept vertically in the Earth's gravitational field. The average energy of the gas at low temperatures (such that mgL>> k„T ) is given byarrow_forwardAt what temperature would the rms speed of the helium atoms (mass=6.66x10^-27kg) equal its escape speed from the earth which is 1.12x 10^4 m/s? Answer is given as 60509 K but cannot figure out how that could be it.arrow_forward(I) By what factor will the rms speed of gas moleculesincrease if the temperature is increased from 20°C to 160°C?arrow_forward
- I) We consider atoms of rubidium in the gaseous state. The molar mass of rubidium is M-87 g/mol. 1) At T=900 K, the rubidium acts like and ideal gas. At this temperature the free energy F is given by h2 F = -kgT ln Z where Z = with z N! V and A = (; 1/2 N being the number of 2TmkBT particles of the gas and m the mass of one particle. a) Explain the presence of the N! in the equation. b) Derive the expression of F as a function of T and the number of particles per unit volume, n=N/V. c) Show that u = T In(nA) where 7 is a quantity that you will express as a function of T.arrow_forward(i) State the assumptions made in deriving the expression P = pc² for a fixed mass of deal gas. (ii) Estimate the Kinetic energy of a steam molecule at 11 00C.arrow_forwardi) Evaluate rms speed, the average kinetic energy of a molecule and total random kinetic energy of all the molecules in 5 moles of methane gas at a temperature of 800 K. (Molar mass of methane is 16.04 x 10*mole/kg, and kB = 1.38 x 10-23 J/K)arrow_forward
- i) Evaluate rms speed, the average kinetic energy of a molecule and total random kinetic energy of all the molecules in 6 moles of air gas at a temperature of 700 K. (Molar mass of air is 28.97 x 10 ³ mole/kg, and kB = 1.38 x 10 23 J/K)arrow_forwardExplain why in a gas of N molecules, the number of molecules having •v+Av f(v)av. speeds in the finite interval u to u + Au is AN = Varrow_forward(II) What is the rms speed of nitrogen molecules containedin an 8.5 -m3 volume at 2.9 atm if the total amount ofnitrogen is 2100 mol?arrow_forward
- ii) In a cylinder 5 moles of Methane gas (M=16.04 x 10³ kg/mole) is at 35 °C temperature. Calculate for the gas: (R=8.31 J/kg-mole K and KB =1.38 x 10-23 J/K) (a) the average kinetic energy of a molecule, (b) the total random kinetic energy of all the molecules, and (c) the rms speed of a moleculearrow_forward(I) A gas is at 20°C. To what temperature must it be raisedto triple the rms speed of its molecules?arrow_forward(a) How many atoms of helium gas fill a spherical balloon of diameter 30.8 cm at 18.0°C and 1.00 atm? atoms (b) What is the average kinetic energy of the helium atoms? ] (c) What is the rms speed of the helium atoms? km/sarrow_forward
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